Question

解方程1.1-2+y/6=y-1-2y/4解方程组2.x+y=6005%+8y%=60*6%3.3*(x+y)-2*(2

Answer 1

1.1-2+y/6=y-1-2y/4

y/6-y/2=0

y=0

2.5%+8y%=60*6%

5+8y=360

8y=355

y=44.375

x+y=600

x+44.375=600

x=555.625

3.3*(x+y)-2*(2x-y)=8

5y-x=8

x=5y-8

2*(x-y)/3+1=(x+y)/4

8x-8y+12=3x+3y

5x-11y=-12

25y-40-11y=-12

y=2

4.x+y-z=3

y=3-x+z

3x+y-4z=13

3x+3-x+z-4z=13

2x-3z=10

x=5+3z/2

5x-y+3z=5

5x+3-x+z+3z=5

4x+4z=2

20+6z+4z=2

z=-1.8